Cast iron is purified by heating on the hearth of furnace by a process called
Smelting
Calcination
Puddling
Roasting
The molten metal withdrawn from the furnace is called
Cast Iron
Pig Iron
Steel
Spongy Iron
Roasting is generally used for
Carbonate ore
Sulphide ore
Oxide ore
Chloride ore
The corrosion resistance of steel is greatly improved by the addition of
Nickel
Chromium
Tungsten
Silicon
Iron produced at 750°C is in the solid state, it is porous and is known as
Bauxite is an ore of
Manganese
Sodium
Aluminium
Lead
The constituent metals of bronze are
Cu and Zn
Cu and tin
Cu and C
Cu and Chromium
The metallurgy of iron involves the manufacture of
Wrought iron
Cast iron
The impurity present in the ores is
Flux
Slag
Mud
Gangue
Extraction of the metals from their ores and preparation of alloys is called?
Thermochemistry
Metallurgy
Polymerisation
Electrolysis